有谁知道如何直接调起图片库

import Want from '@ohos.app.ability.Want'; 
import common from '@ohos.app.ability.common'; 
 
let want: Want = { 
  bundleName: 'com.ohos.photos', 
  abilityName: 'com.ohos.photos.MainAbility', 
  parameters: { 
    uri: 'detail' 
  } 
}; 
let context = getContext(this) as common.UIAbilityContext; 
context.startAbility(want);